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Cyber Threat
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Ransomware victim Manufacturing

JS Constructor, INC

Listed by Emperador on · organisation based in United States

Disclosed
Oct 23, 2026
Leak-site listing date
Threat group
Emperador
68 victims listed
Country
United States
#1 most targeted
Sector
Manufacturing

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Emperador. Figures and technique mappings are quoted from the source data, not inferred.

About the Emperador group

Emperador has listed 38 victims since August 2026.

Vulnerabilities Emperador is recorded exploiting

5 of these 5 are in the CISA Known Exploited Vulnerabilities catalog, 5 of them recorded by CISA as used in ransomware campaigns. CVEs attributed to Emperador across its reported activity. There is no indication that any of these was involved in the JS Constructor, INC incident — the source data does not record an entry point.

Incident analysis

JS Constructor, INC was listed by Emperador ransomware, a group with 68 victims recorded in this database. The listing appeared on the group's leak site on October 23, 2026.

JS Constructor, INC is based in United States and operates in the Manufacturing sector. United States ranks #1 worldwide for ransomware disclosures, with 10,149 victims in this database.

Sector context. Manufacturing companies are frequently targeted because production downtime directly translates to financial loss. Ransomware operators exploit this time-sensitivity to demand higher ransoms and faster payment.

Emperador typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was JS Constructor, INC attacked by ransomware?

Yes. JS Constructor, INC was listed as a victim of the Emperador ransomware group on October 23, 2026. The organisation is based in United States and operates in the Manufacturing sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked JS Constructor, INC?

JS Constructor, INC was attacked by Emperador ransomware. Emperador is one of the most active ransomware groups, having claimed 68 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the JS Constructor, INC ransomware attack occur?

The ransomware attack on JS Constructor, INC was disclosed on October 23, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the JS Constructor, INC ransomware attack?

The specific data stolen from JS Constructor, INC has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Manufacturing organisation, JS Constructor, INC likely held sensitive business data, client information, and operational records.

How can organisations protect against Emperador attacks?

To defend against Emperador and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.